28321162017 has 4 divisors (see below), whose sum is σ = 37761549360. Its totient is φ = 18880774676.

The previous prime is 28321161989. The next prime is 28321162027. The reversal of 28321162017 is 71026112382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28321162017 - 2¹¹ = 28321159969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28321162027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4720193667 + ... + 4720193672.

It is an arithmetic number, because the mean of its divisors is an integer number (9440387340).

Almost surely, 2^28321162017 is an apocalyptic number.

It is an amenable number.

28321162017 is a deficient number, since it is larger than the sum of its proper divisors (9440387343).

28321162017 is an equidigital number, since it uses as much as digits as its factorization.

28321162017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440387342.

The product of its (nonzero) digits is 8064, while the sum is 33.

Adding to 28321162017 its reverse (71026112382), we get a palindrome (99347274399).

The spelling of 28321162017 in words is "twenty-eight billion, three hundred twenty-one million, one hundred sixty-two thousand, seventeen".